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When monitoring the effectiveness of treatment for a patient with a large anterior wall myocardial infarction, the most important information for the nurse to obtain is:
- A. Central venous pressure (CVP).
- B. Systemic vascular resistance (SVR).
- C. Pulmonary vascular resistance (PVR).
- D. Pulmonary artery wedge pressure (PAWP).
Correct Answer: D
Rationale: The correct answer is D: Pulmonary artery wedge pressure (PAWP). This is crucial in monitoring a patient with a large anterior wall myocardial infarction as it provides information on left ventricular function and fluid status. A high PAWP may indicate left ventricular failure or fluid overload, requiring immediate intervention.
A: Central venous pressure (CVP) is not as specific for assessing left ventricular function and may not provide accurate information in this scenario.
B: Systemic vascular resistance (SVR) is important in assessing systemic blood flow, but it may not directly indicate left ventricular function in this case.
C: Pulmonary vascular resistance (PVR) is more relevant in conditions affecting the pulmonary circulation and may not be as immediately informative in assessing left ventricular function in this context.
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An intra-aortic balloon pump (IABP) is being used for a patient who is in cardiogenic shock. Which assessment data indicate to the nurse that the goals of treatment with the IABP are being met?
- A. Urine output of 25 mL/hr.
- B. Heart rate of 110 beats/minute.
- C. Cardiac output (CO) of 5 L/min.
- D. Stroke volume (SV) of 40 mL/beat.
Correct Answer: C
Rationale: The correct answer is C: Cardiac output (CO) of 5 L/min. In cardiogenic shock, the primary goal of using an IABP is to improve cardiac output to ensure adequate perfusion to vital organs. A cardiac output of 5 L/min indicates adequate blood flow and perfusion.
Choice A is incorrect as urine output is not a direct indicator of cardiac function. Choice B is incorrect as a heart rate of 110 beats/minute alone does not provide information on the effectiveness of the IABP in improving cardiac output. Choice D is incorrect as stroke volume alone does not provide a comprehensive assessment of overall cardiac function.
What does pulse oximetry measure?
- A. Arterial blood gases
- B. Hemoglobin values
- C. Oxygen consumption
- D. Oxygen saturation
Correct Answer: D
Rationale: Pulse oximetry measures oxygen saturation in the blood by analyzing the absorption of light by hemoglobin. Oxygen saturation indicates the percentage of hemoglobin molecules carrying oxygen. This is essential for assessing respiratory function and oxygen delivery to tissues. Arterial blood gases (Choice A) directly measure oxygen and carbon dioxide levels in the blood, not specifically oxygen saturation. Hemoglobin values (Choice B) provide information about the amount of hemoglobin present but not its oxygen-carrying capacity. Oxygen consumption (Choice C) is a measure of how much oxygen is used by tissues, not what pulse oximetry directly measures.
A 45-year-old postsurgical patient is on a ventilator in the critical care unit has been tolerating the ventilator well and has not required any sedation. The apbairtbi.ecnomt /bteesct omes tachycardic and hypertensive with a respiratory rate that has increased to 28 breaths/min. The ventilator is set on synchronized intermittent mandatory ventilation (SIMV ) at a rate of 10 breaths/min. The patient has been suctioned recently via existing endotracheal tube until airway is clear. When the patient responds appropriately to the nurse’s command s, what should be the nurse’s priority intervention?
- A. Assessing the patient’s level of pain
- B. Decreasing the SIMV rate on the ventilator
- C. Providing sedation as ordered
- D. Suctioning the patient again
Correct Answer: A
Rationale: The correct answer is A: Assessing the patient's level of pain. In this situation, the patient's tachycardia, hypertension, and increased respiratory rate could be indicative of pain. By assessing the patient's pain level, the nurse can address any discomfort the patient may be experiencing, which could be contributing to these physiological responses.
Summary of other choices:
B: Decreasing the SIMV rate on the ventilator - This is not the priority intervention as the patient's symptoms are more likely related to pain rather than the ventilator settings.
C: Providing sedation as ordered - Sedation is not the priority in this case as the patient has been tolerating the ventilator well without requiring sedation.
D: Suctioning the patient again - Since the airway has been recently cleared, suctioning again is not necessary at this point and would not address the underlying cause of the patient's symptoms.
In which situation would a healthcare surrogate or proxy a ssume the end-of-life decision-making role for a patient?
- A. When a dying patient requires extensive heavy sedatioanb,i rbs.ucocmh/ taesst benzodiazepines and narcotics, to control distressing symptoms
- B. When a dying patient who is competent requests to wi thdraw treatment against the wishes of the family
- C. When a dying patient who is competent requests to con tinue treatment against the recommendations of the healthcare team
- D. When a dying patient who is competent is receiving pr n treatment for pain and anxiety
Correct Answer: A
Rationale: The correct answer is A because in this situation, the patient is no longer able to make decisions for themselves due to being heavily sedated. The healthcare surrogate or proxy steps in to make decisions on behalf of the patient to ensure their comfort and well-being.
Choice B is incorrect because the patient is competent and able to make their own decisions, so there is no need for a surrogate to take over decision-making.
Choice C is incorrect because the patient is competent and has the right to make decisions about their own treatment, even if they go against medical recommendations.
Choice D is incorrect because the patient is competent and receiving appropriate treatment for their pain and anxiety, so there is no need for a surrogate to intervene in this scenario.
A patient has just been admitted to the ICU after being in a severe auto accident and losing one of her legs. Her husband has his hand over his heart and complains of a rapid heart rate. The nurse recognizes his condition as a sign of which stage of the general adaptation syndrome to stress?
- A. Alarm stage
- B. Exhaustion stage
- C. Resistance stage
- D. Adaptation stage
Correct Answer: A
Rationale: The correct answer is A: Alarm stage. The husband's rapid heart rate indicates the initial alarm reaction to stress, characterized by physiological arousal. This stage involves the body's fight-or-flight response to a stressor. In this scenario, the husband is experiencing the physiological effects of the stressful situation, such as the auto accident and loss of a limb. The other choices are incorrect because:
B: Exhaustion stage occurs if stress continues without relief, leading to depletion of resources and increased vulnerability to illness.
C: Resistance stage is the body's attempt to adapt and cope with the stressor after the initial alarm reaction.
D: Adaptation stage is not a recognized stage in the general adaptation syndrome model.